Eccentric variable structure of polishing machine

Abstract

The eccentric variable structure of the polishing machine comprises a dust collection fan, the dust collection fan comprises an impeller disc and a plurality of blades arranged on the impeller disc, an eccentric element is arranged on the end face of one side of the impeller disc, and the eccentric element deviates from the rotating axis of the center of the impeller disc. The relative position of the gravity center of the eccentric element and the rotating axis of the impeller disc is variable, and when the balance effect of the eccentric element is affected by size and mass deviation of parts on the polishing machine or abrasion of blades in the using process or other reasons, the eccentric element can be adjusted, so that the balance effect is improved. The relative position of the gravity center of the eccentric element and the rotating axis of the impeller disc is changed, so that the machine is balanced as much as possible, vibration generated by unbalance is eliminated, and the good polishing effect of the polishing machine is kept.

Description

TECHNICAL FIELD

[0001] The utility model relates to a polishing machine especially relates to a polishing machine eccentric variable structure. BACKGROUND

[0002] In the field of mechanical processing equipment, especially in the field of precision machinery and polishing equipment, the precision and stability of the polishing machine are crucial. The polishing machine is a device for finishing the surface of a workpiece, which removes small protrusions and defects on the surface to achieve high smoothness and flatness of the workpiece surface.

[0003] For example, the sanding machine disclosed in patent CN117001486A includes a housing, a drive assembly mounted in the housing, a fan assembly connected to the drive assembly, and a bottom plate assembly driven by the drive assembly. The drive assembly has a motor axis, the fan assembly includes a mounting disc connected to the drive assembly and integrated with the heat dissipation fan blades and the dust collection fan blades, the dust collection fan blades are provided on the second surface of the mounting disc, the first counterweight area is provided on the second surface, the first counterweight area includes the first counterweight fan blades thickened from the dust collection fan blades and the first counterweight blocks protruding from the periphery of the mounting disc, the fan assembly also has an eccentric element protruding from the second surface. Under the drive of the motor shaft and the eccentric element, the bottom plate assembly makes eccentric motion, the first counterweight area on the fan assembly balances the eccentric force generated by the eccentric rotation of the bottom plate assembly, eliminates the vibration caused by the imbalance, and thus achieves better polishing quality.

[0004] The position of the counterweight block on the existing polishing machine for balancing is fixed and cannot be changed, so the balancing effect of the counterweight block may be affected by the size and mass deviation of the parts on the polishing machine, making it difficult for the counterweight block to balance the eccentric force. In addition, the dust collection blades may be affected by wear or other factors during use, affecting the polishing precision. The fixed position of the counterweight block cannot be adjusted to improve the balancing condition. SUMMARY

[0005] Based on the above-mentioned fixed position of the counterweight block on the dust collection fan blades, which cannot be adjusted according to the size and mass deviation, as well as the wear after use, the utility model provides a polishing machine eccentric variable structure.

[0006] The utility model adopts the technical scheme that a polishing machine eccentric variable structure, including dust collection fan, dust collection fan includes impeller disc and sets up a plurality of blades on the impeller disc, the one side end face of impeller disc is equipped with eccentric element, eccentric element deviates the rotation axis of impeller disc center and is arranged, the relative position of gravity center of eccentric element and rotation axis of impeller disc is variable.

[0007] The further preferred technical scheme of the utility model discloses: the eccentric element can rotate relative to the impeller disc on the first axis of the impeller disc to change the relative position of the gravity center of the eccentric element and the rotation axis of the impeller disc, and the first axis is parallel to the rotation axis of the impeller disc.

[0008] The further preferred technical scheme of the utility model discloses: the eccentric element includes the movable piece of cylindrical structure and eccentric block, and the eccentric block is protruded on the side wall of the movable piece circumferentially to make the gravity center of the whole formed by the combination of the eccentric block and the movable piece deviate to the side with the eccentric block, a connecting shaft is fixed on the one end surface of the impeller disc, the first axis coincides with the axis of the connecting shaft, the one end of the movable piece is equipped with the insertion slot of the plug-in cooperation with the connecting shaft, the movable piece is inserted on the connecting shaft through the insertion slot, and the movable piece can rotate around the axis of the connecting shaft to change the angular position of the eccentric block.

[0009] The further preferred technical scheme of the utility model discloses: the fastener is screw, the center of the end face of the other end of the movable piece is equipped with the mounting hole that is communicated with the insertion slot, the center of the end face of the connecting shaft is equipped with the threaded hole, and the screw is connected in screw threads through the mounting hole and the threaded hole, and the movable piece is fixed on the connecting shaft.

[0010] The further preferred technical scheme of the utility model discloses: one of the circumferential direction of the connecting shaft and the inner side wall of the insertion slot is equipped with the protrusion, and the other is equipped with the recess that cooperates with the protrusion, the number of the protrusion is one, and the number of the recess has multiple, and the protrusion is inserted into different recesses through the rotation of the movable piece around the first axis.

[0011] The further preferred technical scheme of the utility model discloses: one of the circumferential direction of the connecting shaft and the inner side wall of the insertion slot is equipped with the protrusion, and the other is equipped with the recess that cooperates with the protrusion, the number of the protrusion is one, and the number of the recess has multiple, and the protrusion is inserted into different recesses through the rotation of the movable piece around the first axis.

[0012] The further preferred technical scheme of the utility model discloses: the plurality of blades are arranged at the outer edge of the one side end face of the impeller disc, and the counterweight area is arranged between two blades.

[0013] The further preferred technical scheme of the utility model discloses: the center of the impeller disc is equipped with the central shaft hole for connection.

[0014] The further preferred technical scheme of the utility model discloses: the one side end face of the impeller disc is equipped with the eccentric shaft, and the rotation axis of the impeller disc is located in the middle of the axis of the eccentric element and the eccentric shaft.

[0015] The movable part is a lead block.

[0016] Compared with the prior art, the utility model discloses the advantage that the eccentric element is installed on the one side end surface of the impeller disc, the eccentric element is arranged to deviate from the rotation axis of the center of the impeller disc, the relative position of the gravity center of the eccentric element and the rotation axis of the impeller disc is variable, when the size and mass of the parts on the polishing machine are deviated, or the balance effect of the eccentric element is influenced by the abrasion of the blade in the use process or other reasons, the relative position of the gravity center of the eccentric element and the rotation axis of the impeller disc can be changed by adjusting the eccentric element, the machine can reach the balance as far as possible, and the vibration generated by the unbalance can be eliminated, thereby the good polishing effect of the polishing machine is maintained. BRIEF DESCRIPTION OF DRAWINGS

[0017] The utility model will be further described in detail in combination with the drawings and preferred embodiments, but the skilled person will appreciate that these drawings are only drawn for the purpose of explaining the preferred embodiments, and therefore should not be regarded as a limitation on the scope of the utility model. In addition, unless specifically indicated, the drawings only schematically show the composition or structure of the described object conceptually and can contain exaggerated display, and the drawings are not necessarily drawn to scale.

[0018] Figure 1 Structure schematic view for the eccentric element on the dust collection fan;

[0019] Figure 2 Structure schematic view for the eccentric element and the dust collection fan separation;

[0020] Figure 3 State diagram for the eccentric block angle position change;

[0021] Figure 4 Sectional view schematic view for the eccentric element on the dust collection fan;

[0022] Figure 5 Structure schematic view for one side of the dust collection fan;

[0023] Figure 6 Structure schematic view for the other side of the dust collection fan;

[0024] Figure 7 Structure schematic view for the eccentric element.

[0025] In the drawing: 1, dust collection fan; 2, impeller disc; 3, blade; 4, eccentric shaft; 5, center shaft hole; 6, eccentric element; 7, counterweight area; 8, connecting shaft; 9, movable part; 10, eccentric block; 11, eccentric shaft center line; 12, rotation axis; 13, screw; 14, mounting hole; 15, slot; 16, threaded hole; 17, first axis; 18, recess; 19, protrusion. DETAILED DESCRIPTION

[0026] The preferred embodiments of the present application will be described in detail below with reference to the drawings. Those skilled in the art will appreciate that the description is merely descriptive, exemplary, and should not be interpreted as limiting the scope of protection of the present application.

[0027] It should be noted that similar reference numerals refer to similar items throughout the drawings, and once an item is defined in one drawing, it can not be further defined and explained in subsequent drawings.

[0028] Figures 1-7 As shown, the eccentric variable structure of a polishing machine comprises a dust collection fan 1, which comprises an impeller disc 2 and a plurality of blades 3 arranged on the impeller disc 2. Preferably, the impeller disc 2 is a circular plate structure.

[0029] An eccentric element 6 is arranged on one side end surface of the impeller disc 2, and the eccentric element 6 is arranged to deviate from the rotation axis 12 of the impeller disc 2. The relative position of the center of gravity of the eccentric element 6 and the rotation axis 12 of the impeller disc 2 is variable. The rotation axis 12 of the impeller disc 2 coincides with the axis of the impeller disc 2 itself.

[0030] When the size and mass of parts on the polishing machine deviate, or when the blades 3 are worn during use or other reasons affect the balance of the eccentric element 6, the relative position of the center of gravity of the eccentric element 6 and the rotation axis 12 of the impeller disc 2 can be changed by adjusting the eccentric element 6, so that the machine can be balanced as much as possible to eliminate the vibration caused by the unbalance, thereby maintaining the good polishing effect of the polishing machine.

[0031] Figures 4-6 As shown, preferably, the center of the impeller disc 2 is provided with a central shaft hole 5 for connection. The impeller disc 2 can be mounted on the motor shaft of the motor of the polishing machine for output power through the central shaft hole 5. When the motor is started, the impeller disc 2 is driven by the motor shaft to rotate around its own rotation axis 12.

[0032] The eccentric element 6 can rotate relative to the impeller disc 2 around the first axis 17 on the impeller disc 2 to change the relative position of the center of gravity of the eccentric element 6 and the rotation axis 12 of the impeller disc 2. The first axis 17 is parallel to the rotation axis 12 of the impeller disc 2. The center of gravity of the eccentric element 6 is adjusted by rotation, so that a larger area is not required on the impeller disc 2 to accommodate the movement of the eccentric element 6, and the overall structure can be more compact.

[0033] Figure 3As shown, preferably, the eccentric element 6 comprises a cylindrical movable member 9 and an eccentric block 10, the eccentric block 10 is protruded on the circumferential side wall of the movable member 9, so that the center of gravity of the whole formed by the combination of the eccentric block 10 and the movable member 9 is deviated to the side with the eccentric block 10. A connecting shaft 8 is fixed on one side end surface of the impeller disc 2, the first axis 17 coincides with the axis of the connecting shaft 8. A slot 15 is provided on one end of the movable member 9, the movable member 9 is inserted into the connecting shaft 8 through the slot 15. The movable member 9 can rotate around the axis of the connecting shaft 8 to change the angular position of the eccentric block 10. When the movable member 9 is rotated to adjust, the axis of the movable member 9 coincides with the axis of the connecting shaft 8. The movable member 9 and the connecting shaft 8 are fixed by a fastener, which fixes the adjusted eccentric element 6 on the impeller disc 2 so that the position of the eccentric element 6 will not change by itself. The slot 15 is a circular slot which is matched with the shape of the connecting shaft 8, and the axis of the circular slot coincides with the axis of the movable member 9.

[0034] When the movable member 9 is rotated to adjust the angular position of the eccentric block 10, the center of gravity of the movable member 9 will not change due to the rotation, because the axis of the movable member 9 coincides with the axis of the connecting shaft 8 during the process. After the angular position of the eccentric block 10 is changed by the rotation of the movable member 9, the center of gravity of the whole formed by the combination of the eccentric block 10 and the movable member 9 will change with the change of the position of the eccentric block 10, so as to change the position of the counterweight on the impeller disc 2, and achieve the effect of adjusting the balance.

[0035] The movable member 9 and the impeller disc 2 are connected by the way of insertion of the slot 15 and the connecting shaft 8, so as to ensure the stability of the connection between the movable member 9 and the impeller disc 2.

[0036] Figure 4 As shown, preferably, the fastener is a screw 13, a mounting hole 14 is provided in the center of the end surface of the other end of the movable member 9, which is in communication with the slot 15. A threaded hole 16 is provided in the center of the end surface of the connecting shaft 8, the screw 13 is screwed into the threaded hole 16 through the mounting hole 14, so as to fix the movable member 9 on the connecting shaft 8. The mounting hole 14 is provided in the center of the end surface of the movable member 9, and the threaded hole 16 is provided in the center of the end surface of the connecting shaft 8, so that the mounting hole 14 can always be opposite to the threaded hole 16 when the movable member 9 is rotated around the axis of the connecting shaft 8 to adjust the angular position of the eccentric block 10.

[0037] Figure 5 、 Figure 7As shown, one of the circumferential side wall of the connecting shaft 8 and the inner side wall of the slot 15 is uniformly provided with a plurality of protrusions 19, and the other is provided with a plurality of grooves 18 matched with the protrusions 19, the number of the grooves 18 is the same as that of the protrusions 19, when the slot 15 is inserted on the connecting shaft 8 for connection, the plurality of protrusions 19 and the plurality of grooves 18 are matched one by one. Preferably, one circle of the inner side wall of the slot 15 is uniformly provided with six protrusions 19, the six protrusions 19 are arranged in a ring around the axis of the movable element 9, the circumferential side wall of the connecting shaft 8 is uniformly provided with six grooves 18, when the movable element 9 is inserted on the connecting shaft 8 through the slot 15, the protrusions 19 and the grooves 18 are matched one by one to form a clamping connection, so that the movable element 9 and the connecting shaft 8 cannot rotate relative to each other, and the fixed connection between the movable element 9 and the connecting shaft 8 is more stable, when it is necessary to adjust the angle position of the eccentric block 10, the movable element 9 is first pulled out from the connecting shaft 8, then the movable element 9 is rotated to adjust the angle, after the angle is adjusted, the movable element 9 is inserted back into the connecting shaft 8, and then fixed through the screw 13, when one protrusion 19 jumps from one groove 18 to another groove 18 during the adjustment process, the eccentric block 10 rotates 60° around the axis of the connecting shaft 8. The number of the protrusions 19 and the grooves 18 is not limited in the patent, and other numbers of the protrusions 19 and the grooves 18 are also suitable for the patent.

[0038] Figure 1 , Figure 2 As shown, several blades 3 are arranged at the outer edge of one side end surface of the impeller disc 2, and a counterweight area 7 is arranged between two of the blades 3, and the eccentric element 6 is arranged on the counterweight area 7. The eccentric element 6 is arranged between the blades 3, so that the eccentric element 6 can be used for balancing the dust collection fan 1 during rotation, and can also be used for balancing the polishing part of the eccentric rotation of the polishing machine.

[0039] The side end surface of the impeller disc 2, on which the eccentric element 6 is arranged, is provided with an eccentric shaft 4, and the rotation axis 12 of the impeller disc 2 is located in the middle of the axis 11 of the eccentric element 6 and the eccentric shaft, so that the eccentric element 6 can play a good balancing role on the polishing part driven by the eccentric shaft 4 to rotate eccentrically.

[0040] Preferably, the movable element 9 is a lead block, and the eccentric block 10 is integrally formed with the movable element 9. The eccentric block 10 can also be a lead block.

[0041] For the matching structure of the protrusions 19 and the grooves 18, the patent also has another scheme, and the specific content is as follows:

[0042] One of the circumferential side wall of the connecting shaft 8 and the inner side wall of the slot 15 is provided with a protrusion 19, and the other is provided with a groove 18 matched with the protrusion 19, the number of the protrusions 19 is one, and the number of the grooves 18 has multiple, and the protrusion 19 is clamped into different grooves 18 by rotating the movable element 9 around the first axis 17.

[0043] ​The eccentric variable structure of the polishing machine is introduced above, the principle and implementation mode of the polishing machine are described by applying specific examples in the text, and the above embodiment description is only used for helping to understand the polishing machine and the core idea. It should be pointed out that, for ordinary skilled persons in the technical field, some improvements and modifications can be made to the polishing machine without departing from the principle of the polishing machine, and these improvements and modifications also fall within the protection scope of the polishing machine claim.

Claims

1. A variable eccentricity structure of a polishing machine comprising a dust suction fan including an impeller disc and a plurality of blades provided on the impeller disc, characterized in that, The eccentric element is arranged on one side end surface of the impeller disc and is eccentric to the rotation axis of the impeller disc, and the relative position of the gravity center of the eccentric element and the rotation axis of the impeller disc is variable.

2. The eccentricity variable structure of claim 1, wherein The eccentric element is rotatable relative to the impeller disc about a first axis on the impeller disc to change the relative position of the gravity center of the eccentric element and the rotation axis of the impeller disc, and the first axis is parallel to the rotation axis of the impeller disc.

3. The variable eccentricity structure of claim 2, wherein, The eccentric element comprises a movable member in a cylindrical structure and an eccentric block, the eccentric block is protruded on the circumferential side wall of the movable member, so that the gravity center of the whole formed by the combination of the eccentric block and the movable member is deviated to the side with the eccentric block, a connecting shaft is fixed on the one side end surface of the impeller disc, the first axis is coincident with the axis center line of the connecting shaft, one end of the movable member is provided with a plug-in slot for plug-in cooperation with the connecting shaft, the movable member is plugged on the connecting shaft through the plug-in slot, the movable member is rotatable about the axis center line of the connecting shaft to change the angular position of the eccentric block, the axis center line of the movable member is coincident with the axis center line of the connecting shaft when the movable member is rotated and adjusted, and the movable member and the connecting shaft are fixed through fasteners.

4. The variable eccentricity structure of claim 3, wherein, The fastener is a screw, the center of the end surface of the other end of the movable member is provided with a mounting hole in communication with the plug-in slot, the center of the end surface of the connecting shaft is provided with a threaded hole, and the screw is threadedly connected through the mounting hole and the threaded hole to fix the movable member on the connecting shaft.

5. The variable eccentricity structure of claim 3, wherein, One of the circumferential direction of the connecting shaft and the inner side wall of the plug-in slot is provided with a protrusion, and the other is provided with a groove matched with the protrusion, the number of the protrusions is one, and the number of the grooves is multiple, and the protrusion is clamped into different grooves by rotating the movable member about the first axis.

6. The variable eccentricity structure of claim 3, wherein, One of the circumferential direction of the connecting shaft and the inner side wall of the plug-in slot is uniformly provided with multiple protrusions, and the other is provided with a groove matched with the protrusions, and the number of the grooves is the same as that of the protrusions, and when the plug-in slot is plugged on the connecting shaft for connection, the multiple protrusions are one-to-one clamped and matched with the multiple grooves.

7. The variable eccentricity structure of claim 2, wherein, Several of the blades are arranged at the outer edge of the one side end surface of the impeller disc, a counterweight area is arranged between two of the blades, and the eccentric element is arranged on the counterweight area.

8. The variable eccentricity structure of claim 1, wherein, The center of the impeller disc is provided with a central shaft hole for connection.

9. The variable eccentricity structure of claim 2, wherein, The one side end surface of the impeller disc with the eccentric element is protruded with an eccentric shaft, and the rotation axis of the impeller disc is located in the middle of the axis center line of the eccentric element and the eccentric shaft.

10. The variable eccentricity structure of claim 3, wherein, The movable member is a lead block.

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